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A. JEFPERY.

GPARI'NG P0P OPERATING PUMPS. No. 335,201. Patented Peb. 2, 1886.

A UNITED STATES PATENT OFFICE.,

ALFRED JEFFERY, OF BROOKLYN, NEV YORK.

GEARING FOR OPERATING PUMPS.

SPECIFICATION forming part of Letters Patent No. 335,201, dated February2, 1886.

Application filed October 1, 1885.

T0 @ZZ whom, it may concern.-

Be it known that l, ALFRED J EFFERY, a citizen of the United States,residing at Brooklyn, in thecounty of Kings and State of New York, haveinvented a new and useful Improvement in Gearing for Operating Pumps, ofwhich the following is aspecitication.

Uy invention relates to improvements in the method of working pumps bymeans of treadles, and the objects of my improvements are, rst, toemploy the entire weight of the person or persons working the pumps,instead of the muscles of the arms only; and, second, to insure quickaction by having the operator use each foot alternately by throwing hisweight first on one treadle and then on the other. I secure theseobjects by the mechanism illustrated in the accompanying drawings, inWhich- Figure lis an elevation taken from the rear of the machine andthe pumps operated; Fig. 2. a side elevation of all parts to the rightof the dotted line Lin Fig. l; Fig. 3, atop view, and Fig. 4, asectional view, of one treadle and gearing as taken through the dottedline N of Fig. .3.

Similarletters refer to similar parts through` out the several views.

rllhe two treadles A A are keyed or otherwise secured to two shafts, BB,which are supported in bearings D D D D. On the inner ends of shafts BB are two cog-wheels or segments of cog-wheels,G C, of equal size, whichgear into each other when the treadles are secured in theirproperpositions. The shafts B B are the fulerums on which the treadles AA oscillate, and to the free ends ofthe treadles are wrist-pins G G,connecting with rods H Sei'ial-No.178,734. (Nom del.)

H and levers I I, to operate the pistons of pumps P P. Thus the movementof one treadle downward raises the piston of the pump with which it isconnected, and at the same time, through the medium of shaft B B andcog-Wheels@ O,reverses the motion of the other treadle and pump-piston.

The length ofstroke given to the pump-pistons may be regulated byplacing` under the ends of the treadles at the point K a board or blockof any required thickness and provided with rubber or leather cushions,to prevent excessive concussion and strain of the several parts.

For lightness and economy, the inner or central portion ofthe treadle isfilled in with wood E, (see Figs. 3 and 4,) but ofsuch thickness as toleave a rim or iiange,R R, at the sides and ends, to prevent the feet ofthe operator from slipping. At J is a post or standard to be grasped bythe operator to steady his movements, or a railing may be provided forthe same purpose.

The invention may be applied to single or double pumps, whether situatedabove or be# low the well door or covering, and whether lift or force.

Vhat I claim as myinvention, and desire to secure by Letters Patent, is-

The combination of two oscillating treadles connected through the mediumof the shafts B B and gearwheels O C, substantially as set forth.

A LFRED JEFFERY.

Vitnesses:

WALTER G. ELLIOT, Jos. D. BAKER.

